 
     ;; baseline plays once per 4 notes
     (play-it (* 4 beat-ms)
-             synth/vintage-bass
-             ;; cycle the base line forever (but in reality, just for
-             ;; `num-measures` times)
-             (take num-measures (cycle (map note base-line))))
+      synth/vintage-bass
+      ;; cycle the base line forever (but in reality, just for
+      ;; `num-measures` times)
+      (take num-measures (cycle (map note base-line))))
 
     (play-it beat-ms
-             piano
-             ;; concat the sets-of-4-note-chords into a single
-             ;; seq of notes to send to play-it
-             (apply concat
-                    (take num-measures
-                          ;; for each root note, use overtone's rand-chord
-                          ;; to construct a 4-note chord that spans up to
-                          ;; 24 degrees
-                          (map (fn [root-note] (rand-chord root-note :major 4 24))
-                               (cycle base-line)))))))
-
-
-
+      sampled-piano
+      ;; concat the sets-of-4-note-chords into a single
+      ;; seq of notes to send to play-it
+      (apply concat
+             (take num-measures
+                   ;; for each root note, use overtone's rand-chord
+                   ;; to construct a 4-note chord that spans up to
+                   ;; 24 degrees
+                   (map (fn [root-note] (rand-chord root-note :major 4 24))
+                        (cycle base-line)))))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; ok, let's get back to more basics and build up to other exciting things.
-;; first, let's add a few imports.
 
 ;; playing with the guitar synth
-
-;; Mark found this guitar-pick function
 (guitar-pick (guitar) 0 0) ;; String 0 (Low E) Fret 0 (open)
 
 ;; we need a function that will play a sequence of notes; notes will

  (synth/grunge-bass)
  (synth/ks1)

  (stop)
  )

;; now let's play a little melody
(let [beat-ms 250

;; some of them don't
(synth/vintage-bass)

;; switches off all sounds
(stop)

;; other synths to try
(comment
